Martin von Zweigbergk 97b81a0f12 working_copy: get conflict id from the current tree
This prepares for allowing the base tree to be a conflict at the
root-tree level (#1624).

We could remove the `Conflict` variant completely. I tried doing that
and it slowed down `jj diff` by ~3% in the Linux repo with a clean
working copy with only mtime bumped on all files.
2023-05-31 06:28:15 -07:00
..
2022-12-22 07:04:35 -08:00
2023-01-30 09:05:03 -08:00